Piston for a piston cylinder assembly

Abstract

A piston for a piston/cylinder assembly is fastened to a piston rod and axially movably arranged in a working cylinder filled with damping medium. The piston having damping valves for the tension and compression movements of the piston in the cylinder and having a first and second group of passage ducts respectively for the tension and compression directions. The outlet sides of each of the first and second passage ducts open into a control edge covered by valve disks. The first and second passage ducts run axially parallel over at least part of their length, wherein the inlet and outlet regions of each of the first and second passage ducts being arranged axially one behind the other and one of the first and second groups of passage ducts emerges on the end face and the other of the first and second groups of passage ducts emerges radially outward on each side of the working piston.

I claim:  
     
       1. A piston for a piston/cylinder assembly in which the piston comprises a working piston fastened to a piston rod and is axially movably arranged in a working cylinder filled with a damping medium, the piston comprising: 
       a piston body comprising a first group of passage ducts having an inlet region and an outlet region and a second group of passage ducts having an inlet region and an outlet region;  
       a compression damping valve arranged in the outlet region of said first group of passage ducts and comprising a compression control edge arranged at the outlet region of said first group of passage ducts and compression valve disks operatively arranged on said compression control edge for forming a valve seat on said compression control edge; and  
       a tension damping valve arranged in the outlet region of said second group of passage ducts and comprising a tension control edge arranged at the outlet region of said second group of passage ducts and tension valve disks operatively arranged on said tension control edge for forming a valve seat on said tension control edge,  
       wherein said first group of passage ducts run axially parallel to said second group of passage ducts over at least part of their length,  
       wherein the inlet and outlet regions of each of said first and second groups of passage ducts are arranged axially one behind the other, and  
       wherein one of said first and second groups of passage ducts emerges on an end face and the other of said first and second groups of passage ducts emerges radially outward on each axial side of said piston body.  
     
     
       2. The piston of claim  1 , wherein each of said compression damping valves and said tension damping valves comprise spring disks. 
     
     
       3. The piston of claim  1 , wherein said piston body comprises at least two parts. 
     
     
       4. The piston of claim  1 , wherein at least one of said first and second groups of passage ducts comprises a wall formed by an outer circumference of the piston rod. 
     
     
       5. The piston of claim  1 , wherein a portion of the length of said first and second passage ducts is used for both tension movement and compression movement of the piston. 
     
     
       6. The piston of claim  1 , wherein the piston rod comprises a pin and said piston body and said compression damping valve and said tension damping valve are slipped axially one behind the other and fixed on said pin. 
     
     
       7. The piston of claim  1 , wherein said piston body comprising said compression damping valve and a second part comprising said tension damping valve. 
     
     
       8. The piston of claim  1 , wherein said piston body comprises two parts and a first part of said two parts guides and seals the piston body relative to the working cylinder. 
     
     
       9. The piston of claim  1 , wherein at least one of said tension valve disks and said compression valve disks comprises a constant passageway. 
     
     
       10. The piston of claim  1 , wherein said piston body comprises two parts and a first of said two parts further comprises a nonreturn valve. 
     
     
       11. The piston of claim  1 , wherein said second group of passage ducts comprise a cross section operatively designed for additionally throttling a damping medium flowing therethrough at high piston speeds.